Очень надо! Open the brackets using the correct verb form. Use Present Simple only. 1)There (are/is)
different environment problems to which an industrial boiler contributes.
2)Two of these problems (is/are) smog and the acidification of the environment.
3) The values(is/are)
for a moderate size boiler.
4) The governments of the different countries in the European Community (make/making)
programs for reducing the amount of NOx and SO emissions.
5) The maximum amount of emission (have to/has to)
become less every year.
6) In order to control the amount produced the emissions have to be monitored. By law it (is required/is require)
for machinery as big as 300 MW to monitor the emissions continuously.
1. are
2. are
3. is
4. make
5. has to
6. is require